Llamas and Alpacas
Llama and alpaca farming, by Lance Gegner, Appropriate Technology Transfer for Rural Areas (ATTRA). Also available as a PDF document. December 2000.

Llamas Guards
Llama Guardians. “A male gelding llama will guard livestock sheep, goats, free-range poultry etc, by his own natural protective instinct...”

Llama guard photos. Doyle Markham & Cherrie Markham.

Ratites
Ratite production: Ostrich, Emu and Rhea: Livestock Production Guide, by Lance Gegner, Appropriate Technology Transfer for Rural Areas (ATTRA). October 2001.